Actually they can, they can technically just print more BTC by changing the protocol. Also I should remind you, Elon Musk (who is not even a miner) can devalue your token just by making a few tweets.
>There are always other miners that WILL take the money.
They can't do this if the other miners force a protocol change through as their blocks will start to get rejected, the only option then is to fork the chain.
>The Bitcoin difficulty equation has never changed. The math has not been changed. We have newer tx formats, and a newer signature scheme. We also have complete backwards compat.
This doesn't matter, the point is they have the ability to change all of it. Look at any of the bitcoin forks, this has already been done countless times. Saying "this will never happen to BTC" is certainly an opinion you can have, but it's not one based on any kind of objective "math and physics" reality of what they can or can't do. It's an opinion based on trust that they won't change it. You're trusting them to be the sole authority over the network.
>Do you really understand this?
Yes. Do you understand that all distributed systems have weaknesses and constraints, and are subject to change by their operators? Blockchains are not special here. Please don't trust anyone who designs these kind of systems and isn't forthcoming with a full description of the pros and cons.